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Merging upstream version 23.16.0.

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Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
Daniel Baumann 2025-02-13 21:35:32 +01:00
parent d0f42f708a
commit 213191b8e3
Signed by: daniel
GPG key ID: FBB4F0E80A80222F
93 changed files with 64106 additions and 59061 deletions
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39
sqlglot/dialects/presto.py
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@ -32,6 +32,7 @@ from sqlglot.dialects.hive import Hive
from sqlglot.dialects.mysql import MySQL
from sqlglot.helper import apply_index_offset, seq_get
from sqlglot.tokens import TokenType
from sqlglot.transforms import unqualify_columns
def _explode_to_unnest_sql(self: Presto.Generator, expression: exp.Lateral) -> str:
@ -276,11 +277,13 @@ class Presto(Dialect):
this=seq_get(args, 0), substr=seq_get(args, 1), instance=seq_get(args, 2)
),
"TO_CHAR": _build_to_char,
"TO_HEX": exp.Hex.from_arg_list,
"TO_UNIXTIME": exp.TimeToUnix.from_arg_list,
"TO_UTF8": lambda args: exp.Encode(
this=seq_get(args, 0), charset=exp.Literal.string("utf-8")
),
"MD5": exp.MD5Digest.from_arg_list,
"SHA256": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(256)),
"SHA512": lambda args: exp.SHA2(this=seq_get(args, 0), length=exp.Literal.number(512)),
}
FUNCTION_PARSERS = parser.Parser.FUNCTION_PARSERS.copy()
@ -300,6 +303,7 @@ class Presto(Dialect):
LIKE_PROPERTY_INSIDE_SCHEMA = True
MULTI_ARG_DISTINCT = False
SUPPORTS_TO_NUMBER = False
HEX_FUNC = "TO_HEX"
PROPERTIES_LOCATION = {
**generator.Generator.PROPERTIES_LOCATION,
@ -381,7 +385,6 @@ class Presto(Dialect):
exp.GroupConcat: lambda self, e: self.func(
"ARRAY_JOIN", self.func("ARRAY_AGG", e.this), e.args.get("separator")
),
exp.Hex: rename_func("TO_HEX"),
exp.If: if_sql(),
exp.ILike: no_ilike_sql,
exp.Initcap: _initcap_sql,
@ -417,7 +420,7 @@ class Presto(Dialect):
exp.StructExtract: struct_extract_sql,
exp.Table: transforms.preprocess([_unnest_sequence]),
exp.Timestamp: no_timestamp_sql,
exp.TimestampTrunc: timestamptrunc_sql,
exp.TimestampTrunc: timestamptrunc_sql(),
exp.TimeStrToDate: timestrtotime_sql,
exp.TimeStrToTime: timestrtotime_sql,
exp.TimeStrToUnix: lambda self, e: self.func(
@ -444,6 +447,14 @@ class Presto(Dialect):
[transforms.remove_within_group_for_percentiles]
),
exp.Xor: bool_xor_sql,
exp.MD5: lambda self, e: self.func(
"LOWER", self.func("TO_HEX", self.func("MD5", self.sql(e, "this")))
),
exp.MD5Digest: rename_func("MD5"),
exp.SHA: rename_func("SHA1"),
exp.SHA2: lambda self, e: self.func(
"SHA256" if e.text("length") == "256" else "SHA512", e.this
),
}
RESERVED_KEYWORDS = {
@ -615,3 +626,25 @@ class Presto(Dialect):
if kind == "VIEW" and schema.expressions:
expression.this.set("expressions", None)
return super().create_sql(expression)
def delete_sql(self, expression: exp.Delete) -> str:
"""
Presto only supports DELETE FROM for a single table without an alias, so we need
to remove the unnecessary parts. If the original DELETE statement contains more
than one table to be deleted, we can't safely map it 1-1 to a Presto statement.
"""
tables = expression.args.get("tables") or [expression.this]
if len(tables) > 1:
return super().delete_sql(expression)
table = tables[0]
expression.set("this", table)
expression.set("tables", None)
if isinstance(table, exp.Table):
table_alias = table.args.get("alias")
if table_alias:
table_alias.pop()
expression = t.cast(exp.Delete, expression.transform(unqualify_columns))
return super().delete_sql(expression)